TJP1 and nutritional biotin deficiency: In silico analyses further revealed that important proteins involved in maintaining normal colonic function (the tight junction protein ZO1 and the stem cell marker LGR5) and in mediating inflammation (NLRP3 and calprotectin), all of which are dysregulated in biotin deficiency, possess putative binding sites on 3'-UTR for several of the altered miRNAs.